S-90275A648 3/8"-16 x 6" ASME B18.6.3 Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Exceptional load-bearing capacity with 60,000 psi tensile strength for heavy-duty fastening applications
• Reliable thread engagement with Class 2A fit and UNC coarse threads ensuring secure connections
• Flush mounting capability with standard 82° countersink angle for smooth, professional surface finishes
• Full-length threading provides maximum grip strength along the entire 6" length
• Consistent hardness at Rockwell B70 maintains structural integrity under repeated stress
• Industry-standard compliance meets ASME B18.6.3 specifications for guaranteed performance

Professional Applications & Engineering Value

This 3/8"-16 UNC flat head screw delivers critical engineering solutions where surface flushness and high tensile strength are paramount. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, machinery assembly, and structural applications exposed to harsh conditions. The fully threaded design with coarse thread spacing ensures maximum holding power in wood, metal, and composite materials, while the slotted drive offers compatibility with standard installation tools. The 82° countersink angle enables perfect flush mounting in predrilled holes, eliminating protrusions that could interfere with moving parts or create safety hazards. These flat head screws are engineered to maintain clamping force under vibration and dynamic loads, making them ideal for manufacturing, construction, and heavy equipment maintenance applications where reliability cannot be compromised.

Specification Summary & Compliance

This flat head screw features precision UNC threads with Class 2A fit tolerance for consistent performance. Manufactured to ASME B18.6.3 specifications, it ensures dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances. With right-hand thread direction, standard flat head profile, and 6" length, this industrial fastener meets the highest quality standards for professional applications.